Method of affixing reenforcing tape



' I y 1,632,005 June 14 1927. L' H' HARTMAN METHOD o AFFXING REENFORCING TAPE Filed' July s. 1926 Patented June 14, 1927.

UNITED STATES yPATENT OFFICE.

LOUIS H. HARTMAN, OF TOLEDO, OHIO, ASSIGNOB T THE VALVE BAG COMPANY 0l' AMERICA, OF TOLEDO, OHIO, A CORPORATION 0F OHIO.

. Application Med July 8,

This invention relates Ato a method of aflixing reenforcing tape, and more particularly to the use of adhesive and sewing 1n the atiixing of rcenforcing tape. l

For some purposes, as in closingpaper bags, for example, it is desirable to sew a seam through reenforeing-tape and inter# vcning fabric, and also to have the-reenforcing tapeadhered to the fabrlc, at leastpart of the way. It has been found that dlfliculties arise from attempting to sew through adhesive, particularly when attempt is made lo sew at high speed. The vdiiiicultiesare avoided by'using an adhesive which does 1U not set quickly, and by applying the adhesive only where itis most needed. or at spaced intervals alongthe seam, so that the needle mav be thoroughly wiped upon the `uncoated fabric between the places at which adhesive is applied.

Inthe accompanying drawings forming a part of this specification, Figure 1 is a diagrammatic View of a series of bags to which reenforcing tape is being applied lby my method; Fig. 2 is an enlarged section on the line 22 of Fig. 1, and Fig. 3 is an enlarged section on the line 3*?, of F ig. 1.

In the drawings there is shown a series of bags 10 having gusset folds 11, with a valve 12 at one end of one gusset fold on each bag. The bags are shown as being re enforced at the valve end byitape 13 and at the other end by tape 14.' Tape 13 is adhered to the bag by adhesive 15 at the conners of the bags, where strain is greatest,

while portions 1G, between the bags and,

.across the bags between the'corners, are left nneoated. A needle 17 is diagrannnatically shown in Fig. 1, by which a scam 18 may be sewed through the tape and the fabric to which it. is applied.

'lape 14 is shown as having applied therelo patches 19 of adhesive at regularly spaced intervals, leaving an uncoated space 20 between each successive patch of adhesive. In this case the adhesive is applied to -the tape at regular intervals, and then the tape is applied to the bag wit-hout regard to the rela lire location of the coated portions of the tape.

1926. Serial No. 121,128.

It will be, readily seen that, at both the top and bottom of the bag, there are unn coated stretches of material between succes* sivepatches'of adhesive, so thML the needle is' wiped dry at very frequent intervals. In this manner, difficulties otherwise flowing from the attempt Ato sew through adhesive are avoided, es cially when a slow setting adhesive is use or one that becomes strong- 1y adherent only after a considerable period.

It wil1\be understood .that this method may be employed Where adhesive is needed at spaced, points only, and then is applied only where needed, or it ma be employed where it is advantageous .to have the adhe` sive at frequent intervals, lar regard to the exact location of succes` sive patches. 'It will be readily understood that other arrangements of coated and'uncoated portions may be made,- to suit the exigencies of particular needs, within the scope of the appended claims.

'What I claim is:

1'. The method of afiixing reenforcing tape, which consists in adhering portions of the tape to the article, with uncoated portions between the portions which are adwithout particuhered, and sewing a continuous seam through l alternate coated and uneoated portions.

2: T he method of tape, which consists in the tape to the article, with uncoated por tions between the portions which are adhered, and sewing a continuous seam through alternate coat-cd and unc'oated portions before the adhesive has set. 'P

3. The method of alixing reenforcing tape to fabric, which comprises adhering portions of the tape to fabric with .an a-dhcsive which, in its unset state, has compar atively little adhesion to a needle, while leaving uncoated portions of the tape and fabric between the adhered portions, and sewing coated and uncoated portions of the tape and fabric while the adhesive is unset.

In testimony whereof, I have hereunto signed my naine to this specification.

Louis H. HARTMAN.

altixing, reenf'orcing adhering portioris of a continuous seam through alternate 

